Pump-valve



(No Model.)

B. H, WELLS &- E. B. FRENCH.

PUMP VALVE.

No. 436,460. Patented Sept. 16, 1890.

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WITNESSES: INVENTORS:

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BURTON H. WVELLS AND EDVARD B. FRENCH, OF ONEIDA, NElV YORK.

PUMP-VALVE.

SPECIFICATION forming part of Letters Patent No. 436,450, dated September 16, 1890.

Application filed January 14, 1890. serial No. 336,880. (No model.)

To coZZ whom, it may concern:

Be it known that we, BURTON H. lVELLs and EDWARD B. FRENCH, of Oneida, in the county of Madison, in the State of New York, have invented new and useful Improvements in Pump-Valves, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention has special reference to the pump-piston or valve shown in Patent No. 410,867, granted to Burton H. Wells on the 10th day of September, 1889.

The object of this present invention is to render the valve more efficient in its operation, and also to adapt it for use as a check-valve; and to that end the invention consists in the improved construction and combination of parts hereinafter described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is a vertical transverse section of a pump-piston embodying ourimprovements. Fig. 2 illustrates our invention embodied in a check-valve. Figs. 3 and elare detached inverted plan views of the sectional or expansible and contractible rings. Fig. 5 is a transverse section on line 0a 00, Fig. 3; and Fig. 6 is a vertical transverse section illustrating a further improvement in the form of the rabbeted ring.

Similar letters of reference indicate correspondin g parts.

A represents the cylinder or barrel of a pump, and D the pump-rod to which ourimproved valve is connected.

This valve is composed of the solid pistonhead or valve-supporting plate P, which is secured to the rod D, and is considerably smaller in diameter than the interior of the cylinder A, so as to leave an annular space a between the periphery of said followerand interior of the cylinder, for the purpose here inafter explained. Upon this follower or plate P are seated movably radially the sectional or expansible and contraotible ring 7', which is formed with a rabbet b on its under side, and the segments 3 s s, which are inserted in the rabbet b of the ring 0 in such positions as to break joints therewith in the same manner as shown in the prior patent, hereinbefore referred to. The lower portions of the exterior of the segments 5 s s are formed with a channel 0, extending lengthwise of the segments, which channel may be of any suitable form in cross-section, though preferably of the form of a bevel on the edges of the segments, as shown in the prior patent, or concaved, as shown in the annexed drawings.

In order to prevent the segments from shifting circnmferentially on the rabbeted ring r, we form the latter with one or more tenons 23 across the rabbet b, as shown in Fig. 3 of the drawings, between which tenons-the segments 3 s s are seated. V

A short distance above the aforesaid ring 1- is a follower or cap 0, sustained in its position by a cross bar c, attached to or formed integral therewith and fastened to the rod D in any suitable manner. Said follower or cap has its periphery contiguous or in close proximity to the interior of the cylinder A, and has its central portion perforated or formed with an opening 0. By placing the follower or cap above the ring 7, with aspace between them, the said ring is allowed to move more freely radially in and out during the operation of the pump, and in the downward stroke of the rod D-the water forces the ring 1" and segments s s s radially inward, as indicated a by dotted lines in Figs. 1 and 2 of the drawings, and thus allows the water to enter between the peripheries of the rings and segments andinterior of the cylinder A, and pass thence radially inward between the top of the ring 7' and bottom of the follower or cap 0, as shown by dotted arrows in Fig. 1 of the drawings. In a rapid downward stroke of the piston the water will lift the rings and pass radially inward underneath said rings. In the upward stroke of the rod D the water carried on the central portion of the head or plate P presses the ring 0' and segments 5 s 3 outward against the inner side of the cylinder A and down upon the supporting-plate P, as shown by full lines in Fig. 1 of the drawings, and thus prevents the escape of the water downward from the, described valve. By extending the follower or cap 0 to the inner side of the cylinder A, as shown, the wateris eifectuallyprevented from passing from above the follower or cap down between the periphery thereof and inner side of the cylinder, and therefore the outward movement of the ring 7' and segments .9 s sis rendered more positive. Said action of the ring and segments may be furtherinsured by forming the top of the ring r with an upwardly-proj ectin g circumferential wall 4" at or near the outer periphery of said ring, as shown in Fig. 6 of the drawings.

To adapt the described valve to be used as a check-valve, as represented in Fig. 6 of the drawings, we secure the cap 0 stationary to the interior of the cylinder or pipe A,preferably at one of the joints thereof, by making said cap of a sufficient diameter to allow its marginal portion to be clamped between the adjacent ends of the pipe-sections. Thelower plate P is sustained in its position by means of a rivet or bolt passing through the crossbar e and through the plate P, or by any other suitable means.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. The improved pump-valve consisting of a piston-head having vertical water-passages at its periphery, expansible and contractible rings seated on the said pistonhead, and a follower sustained over said rings, with radial water-passages between the bottom of the follower and top of said rings, substantially as described and shown.

2. In combination with the pump-cylinder,

the pump-valve consisting of a piston-head formed with vertical water-passages at its periphery, expansible and contractible rings seated on said piston-head, a follower sustained over said rings, with radial Waterpassages between the bottom of said follower and top of the rings, the periphery of said follower being contiguous to the interior of the pump-cylinder, and the central portion of said follower being perforated, substantially as described and shown.

3. The combination of the rabbeted ring 7*, divided into segments and one or more of said segments formed with the tenon t, and the segments .9 s s, seated in the rabbet of the ring 0, between the aforesaid tenons thereof, substantially as set forth.

4. In combination with the Valve-supporting plate P and follower or cap 0, the sectional ring '2", formed with the circumferential wall 0", projecting from the plane of the ring, substantially as described and shown.

In testimony whereof we have hereunto signed our names this 11th day of January, 1890.

BURTON H. WVELLS. [L. s.] EDWARD B. FRENCH. [L. s.] Witnesses:

J. J. LAASS,

MARK W. DEWEY, 

